I have finally found a LottoWatch (please see the photos below), produced by relatively known brand - OTRON, a brand of Olympos Electronic Co, Hong Kong - that have produced many interesting LCD watches in the late 70's-early 80's, including some early Solar powered LCDs! https://books.google.ro/books?id=o9QDAA ... ny&f=false

And because I could not find online the settings/number generator instructions, here they are:I. Watch Setting:1. Press short the upper right button in the main time mode2. Change between sec:min:hour with the upper left button3. Increment sec:min:hour with the lower right buttonSimilar in dual time, alarm mode...BUT4. To set the day:month - the above steps in the dual time (T2) screen :)Press short upper right button to finish the settings

II. Generating random numbers:The watch may generate/choose 5 to 26 random numbers, out of 30 to 49 values (e.g. from choosing 5 numbers out of 30, 6 out of 49 etc etc ....up to 26 numbers out of 49!)1. Press lower left button for 3-5 secs, One should see now a "nn-NN LO" screen - e.g. "06-49 LO" meaning choose 6 random numbers out of 49 available :))2.Press short the upper right button, the NN number started to blink3. Change between nn (e.g.06) or NN (e.g. 49) with the upper left button4. Increment nn-NN with the lower right button. Press short upper right button to finish the settingsFINALLY PRESS UPPER LEFT BUTTON TO GENERATE THE NUMBERS! Good luck on the lottery! Regards,

Every watch should have its own story...consequently, a watch collector has to be a good storyteller :)

look at page 111 in the same magazine i'm pretty sure you love the lottowatch.

Yes Kasper, You're right as always .... I really like the (multiple) random numbers generator in the lottowatch...it is a quite impressive hardware for mid 80's

And Yes again, I've read already the Synchronar watch advertising from that Popular Mechanics from 1980! But let's not forget that Roger Riehl had a long time relation with that (very popular) magazine - Popular Mechanics!For example, in a December 1973 article in Popular Mechanics titled “World’s First Solar-Powered Watch,” Riehl explained that “the circuit is a breakthrough in the number of components used—about 1100—to achieve its functions. An equivalent circuit would require about 4500 transistors.” Probably such an 1980 advertising was a part of the Roger Riehl's final efforts to save its pioneering company from bankruptcy, that unfortunately have occurred anyway in 1983. More about the Riehl's Synchronar outstanding and pioneering watches (including some photos of early prototypes!) on the article below:https://nawcc.org/images/421_215_224.pdfBest regards,

Every watch should have its own story...consequently, a watch collector has to be a good storyteller :)

Now back to the lotto watch. I had an HP25c calculator which I could program to pick 649 lotto numbers randomly. That was in 1975. The lotto watches look interesting and complex with the numbers display. Similar to the business of the Seiko calendar watches.